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Earnings Per Share - (Tables)
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Basic and diluted earnings per share calculations
The following table is a reconciliation of the basic and diluted earnings per share calculations for the three months ended March 31, 2015 and 2014, respectively:
 
 
Three months ended
 
March 31,
 
2015
 
2014
Numerator:
 
 
 
Net loss
$
(20,706
)
 
$
(15,998
)
Denominator:
 
 
 
Denominator for basic loss per share:
 
 
 
Weighted average common shares outstanding
23,459

 
23,324

Effect of dilutive securities:
 
 
 
Outstanding common stock equivalents
—

 
—

Denominator for diluted earnings per share
23,459

 
23,324

Basic loss per share
$
(0.88
)
 
$
(0.69
)
Diluted loss per share
$
(0.88
)
 
$
(0.69
)
Excluded outstanding share-based awards having an anti-dilutive effect
356

 
1,049

Excluded "in the money" portion of Convertible Notes having an anti-dilutive effect
—

 
1,610